CN109274155B - Wireless private network charging pile control system based on 1.8G frequency band - Google Patents
Wireless private network charging pile control system based on 1.8G frequency band Download PDFInfo
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- CN109274155B CN109274155B CN201811361978.5A CN201811361978A CN109274155B CN 109274155 B CN109274155 B CN 109274155B CN 201811361978 A CN201811361978 A CN 201811361978A CN 109274155 B CN109274155 B CN 109274155B
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- 238000004891 communication Methods 0.000 claims abstract description 37
- 238000012544 monitoring process Methods 0.000 claims abstract description 19
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 6
- 239000003990 capacitor Substances 0.000 claims description 26
- 238000005070 sampling Methods 0.000 claims description 23
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 12
- 229910052710 silicon Inorganic materials 0.000 claims description 12
- 239000010703 silicon Substances 0.000 claims description 12
- 230000006855 networking Effects 0.000 claims description 5
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 230000007547 defect Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- H02J7/0077—
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F15/00—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity
- G07F15/003—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity for electricity
- G07F15/005—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity for electricity dispensed for the electrical charging of vehicles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
Abstract
The invention provides a wireless private network charging pile control system based on a 1.8G frequency band, which comprises a power supply unit, a control unit, a charging pile controller, a 1.8GHz wireless network module and a remote power monitoring service unit, wherein the power supply unit is connected with the control unit through a wireless network; the power supply unit is used for converting commercial power into electric energy required by the vehicle and providing the electric energy to the vehicle; the control unit is used for detecting the power supply state of the power supply unit in the power supply process and controlling the start-stop work of the power supply unit according to the power supply state; the charging pile controller is used for receiving the detection signal of the control unit and the instruction of the remote power monitoring service unit and outputting a control instruction to the control unit; the remote power monitoring service unit is in communication connection with the charging pile controller through a 1.8GHz wireless network module, and is used for acquiring real-time charging information and outputting a control instruction to the charging pile controller; the real-time communication of a plurality of big data flows of electric pile that fill can be ensured, it is high to have transmission rate, strong, the security of real-time nature, need not lay special communication cable alone moreover, use cost is low.
Description
Technical Field
The invention relates to the field of charging piles, in particular to a wireless private network charging pile control system based on a 1.8G frequency band.
Background
With the development of the technology of electric vehicles and the global high requirements on energy and environment, the holding capacity of electric vehicles is increasing, so that the demand of charging piles for charging electric vehicles is increasing, communication connection between the charging piles and a monitoring system needs to be established in the charging process of the charging piles, and real-time uploading is realized; although the networking scheme based on the GPRS has a high number of accessible nodes, the scheme has the defects of low communication rate, poor safety and high traffic cost. Although the networking scheme based on WIFI has high communication rate, the scheme has the defects of low accessible node number and limited transmission distance, and the communication signals of the charging piles covering the edge positions are easy to be unstable; on the other hand, the current poor stability of filling electric pile self to it carries out good protection to the electric motor car to be difficult to guarantee.
In order to solve the above technical problem, it is necessary to provide a new solution.
Disclosure of Invention
In view of the above, the invention aims to provide a wireless private network charging pile control system based on a 1.8G frequency band, which can ensure real-time communication of large data streams of a plurality of charging piles, has the advantages of high transmission rate, strong real-time performance and strong confidentiality, does not need to lay a special communication cable separately, is low in use cost, has good stability of the whole charging pile system, and can well protect a storage battery of an electric automobile.
The invention provides a wireless private network charging pile control system based on a 1.8G frequency band, which comprises a power supply unit, a control unit, a direct current charging gun, an alternating current charging gun, a charging pile controller, a 1.8GHz wireless network module and a remote power monitoring service unit, wherein the power supply unit is connected with the control unit through a wireless network;
the power supply unit is used for outputting direct current and alternating current, a direct current output end of the power supply unit is connected with the direct current charging gun, and an alternating current output end of the power supply unit is connected with the alternating current charging gun;
the control unit is used for detecting the power supply state of the power supply unit in the power supply process and controlling the start-stop work of the power supply unit according to the power supply state;
the charging pile controller is used for receiving a detection signal of the control unit, a charging signal output by the direct current charging gun, a charging signal output by the alternating current charging gun and an instruction of the remote power monitoring service unit and outputting a control instruction to the control unit;
and the remote power monitoring service unit is in communication connection with the charging pile controller through a 1.8GHz wireless network module, and is used for acquiring real-time charging information and outputting a control instruction to the charging pile controller.
Further, the power supply unit comprises a front stage rectifying circuit, an inverter and a rear stage rectifying circuit;
the input end of the pre-stage rectifying circuit is connected with a mains supply, the output end of the pre-stage rectifying circuit is connected with the input end of the inverter, the output end of the inverter is connected with the input end of the post-stage rectifying circuit, the output end of the inverter is connected with the input end of the alternating current charging gun, the output end of the post-stage rectifying circuit is connected with the direct current charging gun, communication interfaces of the alternating current charging gun and the direct current charging gun are in communication connection with a charging pile controller, and the control end of the inverter is connected with the charging pile controller.
Further, the control unit comprises a power supply protection control circuit and an alternating current output detection circuit;
the power supply protection control circuit is arranged between the preceding stage rectifying circuit and the inverter and is also connected with the charging pile controller;
the alternating current output detection circuit is arranged at the output end of the inverter and used for collecting alternating current signals output by the inverter and inputting monitoring signals to the punching device controller.
Further, the power supply protection control circuit comprises a fuse F1, a voltage regulator tube DW1, a voltage regulator tube DW2, a voltage regulator tube DW3, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a capacitor C1, a capacitor C2, a capacitor C3, a thyristor Q1, an adjustable resistor RT, a triode Q2, a triode Q3, a MOS tube Q4, a triode Q5, an operational amplifier U1 and a controllable voltage regulator source U2;
one end of the fuse F1 is connected to the positive output end of the pre-stage rectifying circuit Z1, the other end of the fuse F1 is connected to the drain electrode of the MOS tube Q4, the common connection point between the fuse F1 and the drain electrode of the MOS tube Q4 is connected with the negative electrode of the voltage-stabilizing tube DW1, the positive electrode of the voltage-stabilizing tube DW1 is grounded through a resistor R1, the positive electrode of the silicon controlled rectifier Q1 is connected to the drain electrode of the MOS tube Q4, the negative electrode of the silicon controlled rectifier Q1 is grounded, and the control electrode of the silicon controlled rectifier Q1 is connected to the positive electrode of the voltage-stabilizing tube DW1 through a resistor R2;
the drain of a MOS tube Q1 is connected with one end of an adjustable resistor RT through a resistor R3, the other end of the adjustable resistor RT is grounded, a common connection point between the adjustable resistor RT and a resistor R3 is connected with a reference pole of a controllable voltage-stabilizing source U2, the drain of a MOS tube Q4 is grounded through a resistor R4 and a resistor R5, the drain of a MOS tube Q4 is further connected with the emitter of a triode Q2, the collector of a triode Q2 is connected with the source of a MOS tube Q4, the base of a triode Q2 is connected with the common connection point between a resistor R4 and a resistor R5, the base of the triode Q2 is grounded through a capacitor C1, the drain of the MOS tube Q1 is connected with the gate of the MOS tube Q1 through a resistor R1, the gate of the MOS tube Q1 is grounded through a resistor R1, the collector of the triode Q1 is connected with the drain of the MOS tube Q1, the anode of the voltage-stabilizing tube DW1 is connected with the cathode of the voltage-stabilizing tube DW1, and the anode of the voltage-stabilizing tube DW1 is grounded. The source electrode of the MOS tube Q4 is grounded through a capacitor C2, the source electrode of the MOS tube Q4 is connected with the negative electrode of a voltage-regulator tube DW3, the positive electrode of the voltage-regulator tube DW3 is grounded, and the source electrode of the MOS tube Q4 is connected with the input end of the inverter and the input end of the direct-current charging gun as the output end of the power supply protection control circuit;
the inverting end of the operational amplifier U1 is connected to the drain electrode of the MOS tube Q4 through a resistor R8, the non-inverting end of the operational amplifier U1 is connected with the negative electrode of a controllable voltage-stabilizing source U2, the positive electrode of the controllable voltage-stabilizing source U2 is grounded, the negative electrode of the controllable voltage-stabilizing source U2 is connected to the drain electrode of the MOS tube Q4 through a resistor R11, the non-inverting end of the operational amplifier U1 is grounded through a capacitor C3, the output end of the operational amplifier U1 is connected with one end of the resistor R9, and the other end of the resistor R9 is connected with the base electrode of the triode Q3 and the base electrode of the triode Q5 respectively; the emitter of the transistor Q5 is grounded, and the collector of the transistor Q5 is connected to the common connection point between the capacitor C2 and the source of the MOS transistor Q4;
one end of the resistor R10 is connected to a common connection point between the resistor R3 and the adjustable resistor RT, and the other end of the resistor R10 is connected to the charging pile controller;
the triode Q2 is a P-type triode, and the MOS tube Q4 is a P-type MOS tube.
Further, the alternating current output detection circuit comprises a transformer T1, a sampling rectification circuit and a sampling circuit;
the primary coil of the transformer T1 is connected in series with the negative output end of the inverter, the secondary coil of the transformer T1 is connected with the input end of the sampling rectification circuit, the output end of the sampling rectification circuit is connected with the input end of the sampling circuit, and the output end of the sampling circuit is connected with the input end of the charging pile controller.
Further, the remote power monitoring unit comprises a power regulation and control server and a charging pile server;
the charging pile server is in communication connection with the charging pile controller through a 1.8GHz wireless network module, and the charging pile server is in communication connection with the power dispatching server.
And the NFC charging pile control system further comprises an NFC card reader, and the NFC card reader is in communication connection with the charging pile controller.
Further, the charging pile server and the charging pile controller perform networking communication through the following method:
wireless private network basic station is to filling electric pile controller broadcast network deployment information, fills electric pile controller and receives network deployment information after, to wireless private network basic station transmitting device basic information and access information, and device basic information includes: the method comprises the steps of obtaining a terminal name, a terminal running state and identity registration information;
after receiving the access information, the wireless private network base station allocates a frequency point, an IP address and an MAC address to the charging pile controllers, establishes a network management information table, and unicasts table establishing information to each charging pile controller;
the charging pile controller adjusts the frequency point, the IP address and the MAC address of the charging pile controller according to the frequency point, the IP address and the MAC address in the network table building information and accesses the charging pile controller into a 1.8-frequency-band wireless private network;
the wireless private network base station sends the on-network table building information and the basic equipment information of the charging pile to the charging pile server, and the charging pile server establishes communication connection with the charging pile controller through the on-network table building information and the basic equipment information of the charging pile according to a TCP/IP protocol.
The invention has the beneficial effects that: the invention can ensure the real-time communication of the large data streams of the plurality of charging piles, has the advantages of high transmission rate, strong real-time property and strong confidentiality, does not need to independently lay a special communication cable, has low use cost, has good stability of the whole charging pile system, and can well protect the storage battery of the electric automobile.
Drawings
The invention is further described below with reference to the following figures and examples:
fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic diagram of a power supply protection control circuit of the present invention.
FIG. 3 is an AC output detection circuit according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings of the specification:
the invention provides a wireless private network charging pile control system based on a 1.8G frequency band, which comprises a power supply unit, a control unit, a direct current charging gun, an alternating current charging gun, a charging pile controller, a 1.8GHz wireless network module and a remote power monitoring service unit, wherein the power supply unit is connected with the control unit through a wireless network;
the power supply unit is used for outputting direct current and alternating current, a direct current output end of the power supply unit is connected with the direct current charging gun, and an alternating current output end of the power supply unit is connected with the alternating current charging gun;
the control unit is used for detecting the power supply state of the power supply unit in the power supply process and controlling the start-stop work of the power supply unit according to the power supply state;
the charging pile controller is used for receiving a detection signal of the control unit, a charging signal output by the direct current charging gun, a charging signal output by the alternating current charging gun and an instruction of the remote power monitoring service unit and outputting a control instruction to the control unit;
the remote electric power monitoring service unit is in communication connection with the charging pile controller through a 1.8GHz wireless network module and is used for acquiring real-time charging information and outputting a control instruction to the charging pile controller, wherein the remote electric power monitoring unit comprises an electric power regulation and control server and a charging pile server;
the charging pile server is in communication connection with the charging pile controller through the 1.8GHz wireless network module, and the charging pile server is in communication connection with the power dispatching server, so that the real-time communication of large data streams of a plurality of charging piles can be ensured through the structure, the charging pile system has the advantages of high transmission rate, strong real-time performance and strong confidentiality, a special communication cable does not need to be laid independently, the use cost is low, the stability of the whole charging pile system is good, and the storage battery of the electric vehicle can be well protected; the power dispatching server is used for sending instructions through the charging pile server so as to realize dispatching control; wherein, fill electric pile controller and adopt stand-by power supply, for example rechargeable battery to even after starting the fusing mechanism, still can communicate with filling electric pile server.
In this embodiment, the power supply unit includes a front stage rectification circuit, an inverter, and a rear stage rectification circuit;
the input of preceding stage rectifier circuit is connected with the commercial power, the output of preceding stage rectifier circuit is connected with the input of dc-to-ac converter, the output of dc-to-ac converter is connected with the input of back stage rectifier circuit, the output of dc-to-ac converter is connected with the input of the rifle that charges, the output of back stage rectifier circuit is connected with the direct current rifle that charges, the communication interface of the rifle that charges of alternating current and direct current with fill electric pile controller communication connection, the control end of dc-to-ac converter with fill electric pile controller connection, preceding stage rectifier circuit and back stage rectifier circuit adopt the full bridge rectifier circuit that current diode constitutes, the dc-to-ac converter that the IGBT constitutes, direct current rifle that charges and the rifle that charges are prior art, do not give unnecessary details here.
In this embodiment, the control unit includes a power supply protection control circuit and an ac output detection circuit;
the power supply protection control circuit is arranged between the preceding stage rectifying circuit and the inverter and is also connected with the charging pile controller;
the alternating current output detection circuit is arranged at the output end of the inverter and used for collecting alternating current signals output by the inverter and inputting monitoring signals to the punching device controller.
Specifically, the power supply protection control circuit comprises a fuse F1, a voltage regulator tube DW1, a voltage regulator tube DW2, a voltage regulator tube DW3, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a capacitor C1, a capacitor C2, a capacitor C3, a thyristor Q1, an adjustable resistor RT, a triode Q2, a triode Q3, a MOS tube Q4, a triode Q5, an operational amplifier U1 and a controllable voltage regulator source U2; wherein the controllable voltage-stabilizing source is TL 431;
one end of the fuse F1 is connected to the positive output end of the pre-stage rectifying circuit Z1, the other end of the fuse F1 is connected to the drain electrode of the MOS tube Q4, the common connection point between the fuse F1 and the drain electrode of the MOS tube Q4 is connected with the negative electrode of the voltage-stabilizing tube DW1, the positive electrode of the voltage-stabilizing tube DW1 is grounded through a resistor R1, the positive electrode of the silicon controlled rectifier Q1 is connected to the drain electrode of the MOS tube Q4, the negative electrode of the silicon controlled rectifier Q1 is grounded, and the control electrode of the silicon controlled rectifier Q1 is connected to the positive electrode of the voltage-stabilizing tube DW1 through a resistor R2;
the drain of a MOS tube Q1 is connected with one end of an adjustable resistor RT through a resistor R3, the other end of the adjustable resistor RT is grounded, a common connection point between the adjustable resistor RT and a resistor R3 is connected with a reference pole of a controllable voltage-stabilizing source U2, the drain of a MOS tube Q4 is grounded through a resistor R4 and a resistor R5, the drain of a MOS tube Q4 is further connected with the emitter of a triode Q2, the collector of a triode Q2 is connected with the source of a MOS tube Q4, the base of a triode Q2 is connected with the common connection point between a resistor R4 and a resistor R5, the base of the triode Q2 is grounded through a capacitor C1, the drain of the MOS tube Q1 is connected with the gate of the MOS tube Q1 through a resistor R1, the gate of the MOS tube Q1 is grounded through a resistor R1, the collector of the triode Q1 is connected with the drain of the MOS tube Q1, the anode of the voltage-stabilizing tube DW1 is connected with the cathode of the voltage-stabilizing tube DW1, and the anode of the voltage-stabilizing tube DW1 is grounded. The source electrode of the MOS tube Q4 is grounded through a capacitor C2, the source electrode of the MOS tube Q4 is connected with the negative electrode of a voltage-regulator tube DW3, the positive electrode of the voltage-regulator tube DW3 is grounded, and the source electrode of the MOS tube Q4 is connected with the input end of the inverter and the input end of the direct-current charging gun as the output end of the power supply protection control circuit;
the inverting end of the operational amplifier U1 is connected to the drain electrode of the MOS tube Q4 through a resistor R8, the non-inverting end of the operational amplifier U1 is connected with the negative electrode of a controllable voltage-stabilizing source U2, the positive electrode of the controllable voltage-stabilizing source U2 is grounded, the negative electrode of the controllable voltage-stabilizing source U2 is connected to the drain electrode of the MOS tube Q4 through a resistor R11, the non-inverting end of the operational amplifier U1 is grounded through a capacitor C3, the output end of the operational amplifier U1 is connected with one end of the resistor R9, and the other end of the resistor R9 is connected with the base electrode of the triode Q3 and the base electrode of the triode Q5 respectively; the emitter of the transistor Q5 is grounded, and the collector of the transistor Q5 is connected to the common connection point between the capacitor C2 and the source of the MOS transistor Q4;
one end of the resistor R10 is connected to a common connection point between the resistor R3 and the adjustable resistor RT, and the other end of the resistor R10 is connected to the charging pile controller;
the triode Q2 is a P-type triode, and the MOS tube Q4 is a P-type MOS tube; when the power supply is started, the power supply protection control circuit has no output, so that the impact on a subsequent circuit is prevented, and good protection is realized, and the principle is as follows: at the initial power-on time, because the difference between the source voltage and the gate voltage of the MOS transistor is not enough to turn on the MOS transistor, the current charges the C1 through the resistor R4, and because the emitter voltage of the triode Q2 is greater than the base voltage, the triode Q2 is turned on, at this time, the capacitor C2 is also charged and does not output to a rear end circuit, when the difference between the voltage of the capacitor C2 and the voltage at the two ends of the resistor R7 is greater than the turn-on voltage of the MOS transistor Q4, the MOS transistor Q4 is turned on, and because of the charging effect of the capacitor C1, the difference between the voltage of the capacitor C1 and the emitter voltage of the triode Q2 is smaller than the turn-on voltage of the triode Q2, and the Q2 is turned off, by the structure, the slow output of the whole circuit is realized, and the impact on the rear end circuit is prevented;
the resistor R3 and the adjustable resistor R4 sample direct current at the output end of the pre-stage rectifying circuit, the sampling voltage of the resistor R8 is compared with the set voltage of the controllable voltage-stabilizing source U2 through a comparator formed by an operational amplifier U1, when the sampling voltage is greater than the set voltage, the U1 outputs high level, the triode Q3 and the triode Q5 are simultaneously conducted, at the moment, the grid voltage of the MOS tube Q4 is increased, the source voltage is reduced, so that the MOS tube Q4 is cut off, power supply of a subsequent circuit is cut off, the triode Q5 is continuously conducted after the MOS tube Q4 is cut off, the capacitor C2 is discharged, and preparation is made for next starting;
when the voltage output by the front-stage rectifying circuit is overlarge, namely greater than the set safe voltage, at the moment, the voltage stabilizing tube DW1 is conducted, so that the silicon controlled rectifier Q1 is conducted, after the silicon controlled rectifier Q1 is conducted, the whole rear-end circuit is short-circuited, the current flowing through the fuse F1 is increased, and the fuse F1 is fused, so that a subsequent circuit and a storage battery of the electric automobile are well protected;
resistance R10 is to filling electric pile controller output reference signal, judges through this reference signal that whole circuit is in normal operating, even there is fluctuation, as long as be not enough to make the silicon controlled rectifier switch on, be normal condition, if resistance R10 does not have signal output, then show outage or fuse fusing protection and start, fill electric pile controller and send corresponding alarm signal to filling electric pile server.
In this embodiment, the ac output detection circuit includes a transformer T1, a sampling rectification circuit, and a sampling circuit;
the transformer T1's primary coil connects in series in the negative output end of dc-to-ac converter, and transformer T1's secondary coil is connected with sampling rectifier circuit's input, and sampling rectifier circuit's output is connected with sampling circuit's input, sampling circuit's output and the input of filling electric pile controller are connected, and wherein, sampling rectifier circuit adopts the full bridge rectifier circuit that current diode constitutes, and sampling circuit adopts current sampling chip, converts the direct current signal of telecommunication into digital signal and provides for filling electric pile controller, fills electric pile controller according to the signal of feedback, the duty cycle of the IGBT's in the control inverter to adjust the power of dc-to-ac converter.
In the embodiment, the charging system further comprises an NFC card reader, wherein the NFC card reader is in communication connection with the charging pile controller, is used for identifying the user and facilitating charging of the user through the NFC card reader, does not need field charging, and can be used conveniently only through payment of an account associated with the NFC card; to charging the charging, then by the signal of feeding back in the rifle that charges make statistics of, current rifle that charges all is provided with the detection function of the electric energy that consumes of charging, disconnection control function, the rifle that charges detects charging current and voltage and charging time in the charging process, and send to and fill electric pile controller, thereby realize the charging, on the other hand, fill electric pile controller according to scheduling instruction, when suspending the use, can be to the rifle output control instruction that charges, make the rifle that charges not have the output, these are prior art, do not belong to within the improvement scope of this application, do not give unnecessary details here.
In this embodiment, the charging pile server and the charging pile controller perform networking communication by the following method:
wireless private network basic station is to filling electric pile controller broadcast network deployment information, fills electric pile controller and receives network deployment information after, to wireless private network basic station transmitting device basic information and access information, and device basic information includes: the method comprises the steps of obtaining a terminal name, a terminal running state and identity registration information;
after receiving the access information, the wireless private network base station allocates a frequency point, an IP address and an MAC address to the charging pile controllers, establishes a network management information table, and unicasts table establishing information to each charging pile controller;
the charging pile controller adjusts the frequency point, the IP address and the MAC address of the charging pile controller according to the frequency point, the IP address and the MAC address in the network table building information and accesses the charging pile controller into a 1.8-frequency-band wireless private network;
the wireless private network base station sends the on-network table building information and the basic equipment information of the charging pile to the charging pile server, and the charging pile server establishes communication connection with the charging pile controller through the on-network table building information and the basic equipment information of the charging pile according to a TCP/IP protocol.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (7)
1. The utility model provides a wireless private network fills electric pile control system based on 1.8G frequency channel which characterized in that: the system comprises a power supply unit, a control unit, a direct current charging gun, an alternating current charging gun, a charging pile controller, a 1.8GHz wireless network module and a remote power monitoring service unit;
the power supply unit is used for outputting direct current and alternating current, a direct current output end of the power supply unit is connected with the direct current charging gun, and an alternating current output end of the power supply unit is connected with the alternating current charging gun;
the control unit is used for detecting the power supply state of the power supply unit in the power supply process and controlling the start-stop work of the power supply unit according to the power supply state;
the charging pile controller is used for receiving a detection signal of the control unit, a charging signal output by the direct current charging gun, a charging signal output by the alternating current charging gun and an instruction of the remote power monitoring service unit and outputting a control instruction to the control unit;
the remote power monitoring service unit is in communication connection with the charging pile controller through a 1.8GHz wireless network module, and is used for acquiring real-time charging information and outputting a control instruction to the charging pile controller;
the remote power monitoring unit comprises a power regulation and control server and a charging pile server;
the charging pile server is in communication connection with the charging pile controller through a 1.8GHz wireless network module, and the charging pile server is in communication connection with the power dispatching server.
2. The wireless private network charging pile control system based on the 1.8G frequency band according to claim 1, characterized in that: the power supply unit comprises a front-stage rectifying circuit, an inverter and a rear-stage rectifying circuit;
the input end of the pre-stage rectifying circuit is connected with a mains supply, the output end of the pre-stage rectifying circuit is connected with the input end of the inverter, the output end of the inverter is connected with the input end of the post-stage rectifying circuit, the output end of the inverter is connected with the input end of the alternating current charging gun, the output end of the post-stage rectifying circuit is connected with the direct current charging gun, communication interfaces of the alternating current charging gun and the direct current charging gun are in communication connection with a charging pile controller, and the control end of the inverter is connected with the charging pile controller.
3. The wireless private network charging pile control system based on the 1.8G frequency band according to claim 1, characterized in that: the control unit comprises a power supply protection control circuit and an alternating current output detection circuit;
the power supply protection control circuit is arranged between the preceding stage rectifying circuit and the inverter and is also connected with the charging pile controller;
the alternating current output detection circuit is arranged at the output end of the inverter and used for acquiring alternating current signals output by the inverter and inputting monitoring signals to the charging pile controller.
4. The 1.8G frequency band-based wireless private network charging pile control system according to claim 3, wherein: the power supply protection control circuit comprises a fuse F1, a voltage-regulator tube DW1, a voltage-regulator tube DW2, a voltage-regulator tube DW3, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a capacitor C1, a capacitor C2, a capacitor C3, a thyristor Q1, an adjustable resistor RT, a triode Q2, a triode Q3, an MOS tube Q4, a triode Q5, an operational amplifier U1 and a controllable voltage-regulator source U2;
one end of the fuse F1 is connected to the positive output end of the pre-stage rectifying circuit Z1, the other end of the fuse F1 is connected to the drain electrode of the MOS tube Q4, a common connection point between the fuse F1 and the drain electrode of the MOS tube Q4 is connected with the negative electrode of the voltage stabilizing tube DW1, the positive electrode of the voltage stabilizing tube DW1 is grounded through a resistor R1, the positive electrode of the controllable silicon Q1 is connected to the drain electrode of the MOS tube Q4, the negative electrode of the controllable silicon Q1 is grounded, and the control electrode of the controllable silicon Q1 is connected to the positive electrode of the voltage stabilizing tube DW1 through a resistor R2;
the drain of a MOS tube Q1 is connected with one end of an adjustable resistor RT through a resistor R3, the other end of the adjustable resistor RT is grounded, a common connection point between the adjustable resistor RT and a resistor R3 is connected with a reference pole of a controllable voltage-stabilizing source U2, the drain of a MOS tube Q4 is grounded through a resistor R4 and a resistor R5, the drain of a MOS tube Q4 is further connected with the emitter of a triode Q2, the collector of a triode Q2 is connected with the source of a MOS tube Q4, the base of a triode Q2 is connected with the common connection point between a resistor R4 and a resistor R5, the base of the triode Q2 is grounded through a capacitor C1, the drain of the MOS tube Q1 is connected with the gate of the MOS tube Q1 through a resistor R1, the gate of the MOS tube Q1 is grounded through a resistor R1, the collector of the triode Q1 is connected with the drain of the MOS tube Q1, the anode of the voltage-stabilizing tube DW1 is connected with the cathode of the voltage-stabilizing tube DW1, and the anode of the voltage-stabilizing tube DW1 is grounded. The source electrode of the MOS tube Q4 is grounded through a capacitor C2, the source electrode of the MOS tube Q4 is connected with the negative electrode of a voltage-regulator tube DW3, the positive electrode of the voltage-regulator tube DW3 is grounded, and the source electrode of the MOS tube Q4 is connected with the input end of the inverter and the input end of the direct-current charging gun as the output end of the power supply protection control circuit;
the inverting end of the operational amplifier U1 is connected to the drain electrode of the MOS tube Q4 through a resistor R8, the non-inverting end of the operational amplifier U1 is connected with the negative electrode of a controllable voltage-stabilizing source U2, the positive electrode of the controllable voltage-stabilizing source U2 is grounded, the negative electrode of the controllable voltage-stabilizing source U2 is connected to the drain electrode of the MOS tube Q4 through a resistor R11, the non-inverting end of the operational amplifier U1 is grounded through a capacitor C3, the output end of the operational amplifier U1 is connected with one end of the resistor R9, and the other end of the resistor R9 is connected with the base electrode of the triode Q3 and the base electrode of the triode Q5 respectively; the emitter of the transistor Q5 is grounded, and the collector of the transistor Q5 is connected to the common connection point between the capacitor C2 and the source of the MOS transistor Q4;
one end of the resistor R10 is connected to a common connection point between the resistor R3 and the adjustable resistor RT, and the other end of the resistor R10 is connected to the charging pile controller;
the triode Q2 is a P-type triode, and the MOS tube Q4 is a P-type MOS tube.
5. The 1.8G frequency band-based wireless private network charging pile control system according to claim 3, wherein: the alternating current output detection circuit comprises a transformer T1, a sampling rectification circuit and a sampling circuit;
the primary coil of the transformer T1 is connected in series with the negative output end of the inverter, the secondary coil of the transformer T1 is connected with the input end of the sampling rectification circuit, the output end of the sampling rectification circuit is connected with the input end of the sampling circuit, and the output end of the sampling circuit is connected with the input end of the charging pile controller.
6. The wireless private network charging pile control system based on the 1.8G frequency band according to claim 1, characterized in that: the charging pile control system further comprises an NFC card reader, and the NFC card reader is in communication connection with the charging pile controller.
7. The wireless private network charging pile control system based on the 1.8G frequency band according to claim 1, characterized in that: the charging pile server and the charging pile controller carry out networking communication through the following method:
wireless private network basic station is to filling electric pile controller broadcast network deployment information, fills electric pile controller and receives network deployment information after, to wireless private network basic station transmitting device basic information and access information, and device basic information includes: the method comprises the steps of obtaining a terminal name, a terminal running state and identity registration information;
after receiving the access information, the wireless private network base station allocates a frequency point, an IP address and an MAC address to the charging pile controllers, establishes a network management information table, and unicasts table establishing information to each charging pile controller;
the charging pile controller adjusts the frequency point, the IP address and the MAC address of the charging pile controller according to the frequency point, the IP address and the MAC address in the network table building information and accesses the charging pile controller into a 1.8-frequency-band wireless private network;
the wireless private network base station sends the on-network table building information and the basic equipment information of the charging pile to the charging pile server, and the charging pile server establishes communication connection with the charging pile controller through the on-network table building information and the basic equipment information of the charging pile according to a TCP/IP protocol.
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